🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 20 (from laksa020)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa020.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, meta_canonical AS meta_canonical, ml_categories_json AS ml_categories_json, ml_types_json AS ml_types_json, ml_intent_types_json AS ml_intent_types_json, meta_language AS meta_language, attrs_author AS attrs_author, ifNull(toUnixTimestamp(attrs_publish_time), 0) AS attrs_publish_time, ifNull(toUnixTimestamp(attrs_original_publish_time), 0) AS attrs_original_publish_time, ifNull(attrs_is_republished, 0) AS attrs_is_republished, ifNull(attrs_nr_words, 0) AS attrs_nr_words, ifNull(attrs_boilerpipe_nr_words, 0) AS attrs_boilerpipe_nr_words, ifNull(body_ext_links_number, 0) AS body_ext_links_number, ifNull(body_int_links_number, 0) AS body_int_links_number, ifNull(meta_nofollow, 0) AS meta_nofollow, ifNull(meta_noarchive, 0) AS meta_noarchive, ifNull(props_was_rendered, 0) AS props_was_rendered, ifNull(src_redirect, \'\') AS src_redirect, ifNull(download_time_msec, 0) AS download_time_msec, ifNull(download_ttfb_msec, 0) AS download_ttfb_msec, ifNull(download_size, 0) AS download_size FROM crawler3.page_info_local FINAL PREWHERE int_partition_id = 55 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://appinstitute.com/how-to-build-your-own-mobile-app/\')), getAhrefsUnparsedNoserviceFromURL(\'https://appinstitute.com/how-to-build-your-own-mobile-app/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/appinstitute.com\/how-to-build-your-own-mobile-app\/","crawl_time":1779778732,"first_indexed_time":1541150653,"http_code":200,"src_unparsed":"com,appinstitute!\/how-to-build-your-own-mobile-app\/ s443","src_root_hash":"12304907396284891020","history_drop_reason":null,"meta_title":"How to Build an App - the Step-By-Step Guide to Creating an App","meta_descriptions":["Wondering how to build an app, but not sure where to start? Follow our step-by-step guide to start building your own app today."],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":735,\"\/Computers_and_Electronics\/Software\":721,\"\/Internet_and_Telecom\":479,\"\/Internet_and_Telecom\/Mobile_and_Wireless\":468,\"\/Internet_and_Telecom\/Mobile_and_Wireless\/Mobile_Apps_and_Add-Ons\":459,\"\/Computers_and_Electronics\/Software\/Software_Utilities\":368,\"\/Business_and_Industrial\":110}","ml_types_json":"{\"\/Article\":999,\"\/Article\/How_to\":765}","ml_intent_types_json":"{\"Informational\":997}","meta_language":"en-us","attrs_author":"Ian Naylor","attrs_publish_time":1627309858,"attrs_original_publish_time":1541150653,"attrs_is_republished":1,"attrs_nr_words":"6747","attrs_boilerpipe_nr_words":"6540","body_ext_links_number":70,"body_int_links_number":48,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":399,"download_ttfb_msec":335,"download_size":72460}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 20 · Partition 55

laksa020

12304907396284891020

📄

INDEXABLE

✅

CRAWLED

8 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.3 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property

Value

URL

https://appinstitute.com/how-to-build-your-own-mobile-app/

Last Crawled

2026-05-26 06:58:52 (8 days ago)

First Indexed

2018-11-02 09:24:13 (7 years ago)

HTTP Status Code

200

Content

Meta Title

How to Build an App - the Step-By-Step Guide to Creating an App

Meta Description

Wondering how to build an app, but not sure where to start? Follow our step-by-step guide to start building your own app today.

Meta Canonical

null

Boilerpipe Text

heavy column, fetched on demand

Markdown

heavy column, fetched on demand

Readable Markdown

heavy column, fetched on demand

ML Classification

ML Categories

/Computers_and_Electronics		73.5%
/Computers_and_Electronics/Software		72.1%
/Internet_and_Telecom		47.9%
/Internet_and_Telecom/Mobile_and_Wireless		46.8%
/Internet_and_Telecom/Mobile_and_Wireless/Mobile_Apps_and_Add-Ons		45.9%
/Computers_and_Electronics/Software/Software_Utilities		36.8%
/Business_and_Industrial		11.0%

Raw JSON

{
    "/Computers_and_Electronics": 735,
    "/Computers_and_Electronics/Software": 721,
    "/Internet_and_Telecom": 479,
    "/Internet_and_Telecom/Mobile_and_Wireless": 468,
    "/Internet_and_Telecom/Mobile_and_Wireless/Mobile_Apps_and_Add-Ons": 459,
    "/Computers_and_Electronics/Software/Software_Utilities": 368,
    "/Business_and_Industrial": 110
}

ML Page Types

/Article		99.9%
/Article/How_to		76.5%

Raw JSON

{
    "/Article": 999,
    "/Article/How_to": 765
}

ML Intent Types

Informational

99.7%

Raw JSON

{
    "Informational": 997
}

Content Metadata

Language

en-us

Author

Ian Naylor

Publish Time

2021-07-26 14:30:58 (4 years ago)

Original Publish Time

2018-11-02 09:24:13 (7 years ago)

Republished

Yes

Word Count (Total)

6,747

Word Count (Content)

6,540

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

399

TTFB (ms)

335

Download Size (bytes)

72,460

Location

Host ID

20 (laksa020)

Partition ID

Root Hash

12304907396284891020

Unparsed URL

com,appinstitute!/how-to-build-your-own-mobile-app/ s443